Bug located in Graphics.SectionPlanes.CreateSectionPlane(coord_sys)

[saideogekar]

🔍 Before submitting the issue

• I have searched among the existing issues
• I am using a Python virtual environment

🐞 Description of the bug

The following code to create a Section Plane and activate it works in Scripting window of Mechanical, but not via PyMechanical (I am using VS Code). I have tried both ways to create section plane (1. using only coordinate system as the input 2. using coordinate system and plane orientation as inputs)

# Create Section Plane along the X-Z Plane Using a Specified Coordinate System
# Note: if you want the flip the visibility of the hidden portion and the visbile portion of the model, use (0,1,0)  instead of (0,-1,0) for the direction of the Section Plane.
var_coordinate_system = 'Section Plane Coordinate System'

coord_sys = [cs for cs in Model.CoordinateSystems.Children if cs.Name == var_coordinate_system][0]
section_plane = Graphics.SectionPlanes.CreateSectionPlane(coord_sys)
# section_plane = Graphics.SectionPlanes.CreateSectionPlane(coord_sys,MechanicalEnums.Common.PlaneOrientation.PlaneOrientation_XZ)
section_plane.Direction = Vector3D(0,-1,0)

📝 Steps to reproduce

1. Import geometry (I am unable to attach the geometry file that I used, but any geometry can be used for this purpose).
2. Create coordinate system
3. Create section plane

# Import Geometry File into the Model with Import Preferences for Line Bodies and Named Selections
var_geometry_path = 'D:\\PyAnsysDataLab\\Snap-Fit Buckle\\Geometry_and_Material_Files\\Buckle_Geometry.dsco'
var_process_lines = True
var_process_ns = True
var_namedselection_key = ''

geometry_import_preferences = Ansys.ACT.Mechanical.Utilities.GeometryImportPreferences()
geometry_import_preferences.ProcessLines = var_process_lines
geometry_import_preferences.ProcessNamedSelections = var_process_ns 
geometry_import_preferences.NamedSelectionKey = var_namedselection_key
geometry_import_format = Ansys.Mechanical.DataModel.Enums.GeometryImportPreference.Format.Automatic

geometry_import = Model.GeometryImportGroup.AddGeometryImport()
geometry_import.Import(var_geometry_path,geometry_import_format,geometry_import_preferences)

# Create Cartesian Coordinate System Based on Origin Location - Akshay S.
var_coordinate_system = 'Section Plane Coordinate System'
var_Origin_x = 0
var_Origin_y = 1.56
var_Origin_z = 0

csys_grp = Model.CoordinateSystems
lcs = csys_grp.AddCoordinateSystem()
length_unit = ExtAPI.DataModel.CurrentConsistentUnitFromQuantityName('Length')
lcs.OriginX = Quantity(var_Origin_x, length_unit)
lcs.OriginY = Quantity(var_Origin_y, length_unit)
lcs.OriginZ = Quantity(var_Origin_z, length_unit)
lcs.Name = var_coordinate_system

# ***** This module works in the Scripting window of Mechanical, but not via PyMechanical *****
#**********************************************************************
# Create Section Plane along the X-Z Plane Using a Specified Coordinate System
# Note: if you want the flip the visibility of the hidden portion and the visbile portion of the model, use (0,1,0)  instead of (0,-1,0) for the direction of the Section Plane.
var_coordinate_system = 'Section Plane Coordinate System'

coord_sys = [cs for cs in Model.CoordinateSystems.Children if cs.Name == var_coordinate_system][0]
# section_plane = Graphics.SectionPlanes.CreateSectionPlane(coord_sys)
section_plane = Graphics.SectionPlanes.CreateSectionPlane(coord_sys,MechanicalEnums.Common.PlaneOrientation.PlaneOrientation_XZ)
# section_plane.Direction = Vector3D(0,-1,0)
```can be used for this 

### 💻 Which operating system are you using?

Windows

### 📀 Which ANSYS version are you using?

2025R2

### 🐍 Which Python version are you using?

3.12

### 📦 Installed packages

```shell
aiohappyeyeballs==2.4.4
aiohttp==3.11.12
aiosignal==1.3.2
annotated-types==0.7.0
ansys-api-mechanical==0.1.2
ansys-dpf-composites==0.7.0
ansys-dpf-core==0.14.2
ansys-dpf-post==0.10.1
ansys-mechanical-core==0.11.28
ansys-mechanical-env==0.1.16
ansys-mechanical-stubs==0.1.6
ansys-pythonnet==3.1.0rc6
ansys-tools-path==0.7.3
anyio==4.6.2.post1
appdirs==1.4.4
asttokens==3.0.0
async-timeout==4.0.3
attrs==25.1.0
azure-cognitiveservices-speech==1.32.1
azure-common==1.1.28
azure-core==1.29.6
azure-identity==1.13.0
azure-search-documents==11.4.0
beautifulsoup4==4.12.2
bidict==0.23.1
blinker==1.9.0
bs4==0.0.2
cachetools==5.5.2
certifi==2024.8.30
cffi==1.17.1
charset-normalizer==3.4.1
click==8.1.8
clr_loader==0.2.7.post0
colorama==0.4.6
comm==0.2.3
contourpy==1.3.2
cryptography==44.0.0
cycler==0.12.1
dataclasses-json==0.5.14
debugpy==1.8.15
decorator==5.2.1
defusedxml==0.7.1
distro==1.9.0
docopt==0.6.2
et_xmlfile==2.0.0
exceptiongroup==1.2.2
executing==2.2.0
filelock==3.17.0
Flask==2.3.2
Flask-Cors==3.0.10
Flask-JWT-Extended==4.5.2
Flask-SocketIO==5.3.4
fonttools==4.58.0
frozenlist==1.5.0
fsspec==2025.2.0
gevent==24.11.1
gevent-websocket==0.10.1
google-api-core==2.24.2
google-api-python-client==2.169.0
google-auth==2.40.1
google-auth-httplib2==0.2.0
googleapis-common-protos==1.70.0
greenlet==3.1.1
grpcio==1.71.0
h11==0.14.0
httpcore==1.0.7
httplib2==0.22.0
httpx==0.28.0
huggingface-hub==0.28.1
idna==3.10
imageio==2.28.0
imageio-ffmpeg==0.6.0
importlib_metadata==8.7.0
ipykernel==6.30.1
ipython==8.37.0
isodate==0.7.2
itsdangerous==2.2.0
jedi==0.19.2
Jinja2==3.1.5
jiter==0.8.0
jupyter_client==8.6.3
jupyter_core==5.8.1
kiwisolver==1.4.8
langchain==0.0.152
langdetect==1.0.9
logging==0.4.9.6
lxml==5.3.1
MarkupSafe==3.0.2
marshmallow==3.26.1
matplotlib==3.10.3
matplotlib-inline==0.1.7
msal==1.31.1
msal-extensions==1.2.0
multidict==6.1.0
mypy-extensions==1.0.0
nest-asyncio==1.6.0
num2words==0.5.12
numexpr==2.10.2
numpy==2.2.6
openai==1.34.0
openapi-schema-pydantic==1.2.4
openpyxl==3.1.5
outcome==1.3.0.post0
packaging==24.2
pandas==1.5.2
parso==0.8.4
pillow==11.1.0
platformdirs==4.3.8
playwright==1.52.0
pooch==1.8.2
portalocker==2.10.1
prompt_toolkit==3.0.51
propcache==0.2.1
proto-plus==1.26.1
protobuf==5.29.5
psutil==7.0.0
pure_eval==0.2.3
pyasn1==0.6.1
pyasn1_modules==0.4.2
pycparser==2.22
pydantic==1.10.21
pydantic_core==2.27.1
pyee==13.0.0
Pygments==2.19.2
PyJWT==2.10.1
pyparsing==3.2.3
PyPDF2==3.0.1
PySocks==1.7.1
python-dateutil==2.9.0.post0
python-dotenv==1.0.1
python-engineio==4.11.2
python-pptx==1.0.2
python-socketio==5.12.1
pytz==2025.1
pyvista==0.45.2
pywin32==308
PyYAML==6.0.2
pyzmq==27.0.1
regex==2024.11.6
requests==2.28.2
rsa==4.9.1
scooby==0.10.1
selenium==4.20.0
simple-websocket==1.1.0
six==1.17.0
sniffio==1.3.1
sortedcontainers==2.4.0
soupsieve==2.6
SQLAlchemy==2.0.37
stack-data==0.6.3
tenacity==8.2.2
tiktoken==0.3.3
tokenizers==0.13.3
tornado==6.5.1
tqdm==4.67.1
traitlets==5.14.3
transformers==4.28.1
trio==0.28.0
trio-websocket==0.11.1
typing-inspect==0.9.0
typing_extensions==4.12.2
uritemplate==4.1.1
urllib3==1.26.20
vtk==9.4.2
wcwidth==0.2.13
webdriver-manager==4.0.1
Werkzeug==3.1.3
wsproto==1.2.0
XlsxWriter==3.2.2
yarl==1.18.3
youtube-transcript-api==0.6.3
yt-dlp==2025.2.19
zipp==3.21.0
zope.event==5.0
zope.interface==7.2

[dipinknair]

@saideogekar Thanks for creating this issue. Upon investigation, I can confirm that the issue is related to the Ansys Mechanical itself. Thanks for bringing this to our attention.